"For those sparkies old enough to remember ceramic twisters, this is an updated and very useful product which negates the need for chocolate box connectors and saves both time and space, especially where space is limited. As the conductors are twisted together there is no need to clamp down with screws . It is also as easy to disconnect by just untwisting the wires.I have found the model number 62 especially useful in bathroom lighting as they are IP 55 rated and allow safe and watertight connections to be made to lighting. These are a good thing to have on you at all times, Thoroughly recommended."